Gas-tank cap lock



.my 30, 1929. G. T. KUHN@ Em. 1,?225525 GAS TANK CAP LOCK Filed Nov. 7, 1927 Patented July 30, 1929.

vUNITED STATES g 1,722,527 a'rENr orifice.

GEORGE T. KUHNS AND ROBERT S. WILES, OE DUNCAN, OKLAHOMA.

GAS-TANK CAP LOCK.

Application led November 7, 1927. Serial No. 231,723.

This invention relates to a locking device for use in connection with the filling opening cap of a liquid receptacle.

The primary object of the present invention is to provide a closure cap for tanks in which gasoline or other liquids are stored, and which can be locked to prevent the unauthorized removal of any of the contents of the tank. The device is adaptable for use n, in connection with oil and gasoline drums,

as well as stationary storage tanks.

The invention will be best understood from a consideration of the following detailed description taken inconnection with the accompanying drawings forming a part of the present specification, with the understanding, however, that the invention is not confined to any strict conformity with the showing of the drawings, but may be changed or modified so long as such changes or modications mark no material departure from the salientfeatures of the invention as expressed in the appended claims.

In the drawing 25 Figure 1 is a view in side elevation of the cap structure embodying the present invention.

Figure 2 is atop plan view of the cap structure showing the cover therefor removed.

Figure 3 is a view of the under side of a central portion of the cap structure, having the bolt casing and operating cam removed therefrom.

Figure 4 is a sectional view taken substantially upon the line 4--4 of Fig. 1.

Figure 5 is a longitudinal section taken substantially upon the line 5-5 of Fig. 4.

Figure 6 is a view looking into the top of the bolt housing, the same being removed from the cap structure.

Referring now to the drawing in detail, wherein like numerals of reference indicate corresponding parts throughout, the numeral 1 indicates the body of the filling cap which is, as shown, in the form of a cylinder having one end provided with a wall or bottom 2 which in turn is provided with a passageway 3, for a purpose to be hereinafter pointed out.

Intermediate its ends the body 1 is provided with the surrounding rib 4 and above and below this rib the body is provided with the external screw threads, 5 and 6, respectively.

The upper portion of the cap body 1 is provided with the interior flange 7 upon which rests the collar 8 `of a locking device indicated as a whole by the numeral 9. As shown, the collar of the lock 9 lies below the upper edge of the body 1 which permits lthe (50 application to the upper end of the body of a cover member 10 which cover is provided with the depending interiorly threaded wall 11 which engages the threads 5 formed at the upper end of the body.

The lower portions of the tank cap body 1 has threaded engagement in a filling opening flange 12 which, as shown, forms an integral part of the tank body 13.

Secured to the under side of the bottom wall of the tank cap body by means of screw members 14 is a bolt enclosing casing 15 which is closed at the lower end as shown in Figs. 4 and 5, the closed end being provided with an aperture 16 for the reception 75 of a pivot stud 17 projecting eccentrically from one face of the eccentric body 18. Sur-A rounding the eccentric 18 is an eccentric strap 19 from which there ext-ends a bolt 20, the free end of which bolt projects into an aperture 21 formed in the side wall of the bolt-enclosing chamber 15 as shown in Fig. 4. The opposite face of the eccentric body 18 has extending therefrom in alignment with the stud 17, an arm 22 the end of which is 85 provided with the slot 23 for the reception of a coupling key 24 which is carried by the adjacent end of the lock barrel 25. As clearly shown in Fig. 4, the inner end of the barrel portion of the lock 9 is positioned in the aperture 3 in the bottom wall 2 of the tank cap body and in additon to being held in position in this manner, the lock barrel is provided with a pair of laterally projecting ears 26 which rest against the inner face 95 of the cap body bottom 2 to which they are secured by the screw members 27. i

Suitable washers or gaskets 28 surround the tank cap body at each side of the flange 4, one of which gaskets bears against the free edge of the tank flange 12 while the other is pressed upon by the free edge of the cover wall-11.

From the foregoing description it will be readily seen that when the tank cap body is threaded into the filling opening sleeve of the tank 13, the bolt chamber will extend therethrough to a position where the opening 21 through the wall of this chamber will lie below the inner face of the tank wall. A

manipulation of the lock barrel 25, by the use of an appropriate key, Will turn the barrel and transmit rotary motion through the key 24 to the eccentric bodv 18 thereby causing the projection or retraction of the bolt 20. When the bolt is projected outwardly of its casing 21, the free end thereof will engage the under face of the Wall of the tank 13 and thereby prevent the removal of the cap body from the filling opening, consequently effectively protecting the contents of the tank.

AHaving thus described our invention What we claim is 1. A locking cap for the filling opening of a tank, having an upstanding internally threaded collar surrounding the opening, comprising a cylindrical body having a Wall across one end thereof and having an opening formed through said Wall, screw threads formed about the walled end of said body and designed to engage in said collar, an abutment flange surrounding said body intermediate the ends thereof, for engagement against the edgeV of said flange, a removable cover for the other end of said body, a key controlled lock Within the body and accessible through the said other end when said cover is removed, a laterally extensible bolt arranged yadjacent the Walled end of said body, and designed when shifted toy locking position to engage an adjacent portion of the tank bod and eccentric means connecting said lock yWit said bolt through said Wall opening for shifting the bolt upon actuation of the lock.A

2, A locking cap for the filling opening of a tank, having an upstanding internally threaded collar surrounding the opening, comprising a cylindrical body having a Wall across one end thereof and having an opening formed through said Wall, screw threads formed about the Walled end of said body and designed to engage in said collar, an abutment flange surrounding said body intermediate the ends thereof, for engagement against the edge of said flange, a removable cover for the other end of said body, a key controlled lock Within the body and accessible through the said other end When said cover is re1noved,a laterally extensible bolt arranged adjacent the Walled end of said body, and designed When shifted to locking position to engage an adjacent portion of the tank body, eccentric means connecting said lock with said bolt through said Wall opening for shifting the bolt upon actuation of the lock, and a casing body secured to the end Wall ofthe cylindrical body and housing said bolt7 and designed to extend into the tank when the cylindrical body is positioned.

In testimony whereof We aliiX our signatures.

GEORGE T. KUHNs. ROBERT s. WILEs. 

